List various design patterns available in Java?

Design patterns/models are a well-proved answer for determining a particular problem or job. Design patterns/models are classified into two sections:

1. JEE Design Patterns.
2. Core Java (or JSE) Design Patterns.

In core java, there happens to be essentially three sorts of design models, which are additionally separated into their sub-sections:

• Structural Design Pattern: Composite Pattern, Decorator Pattern, Adapter Pattern, Bridge Pattern, Proxy Pattern, Facade Pattern, Flyweight Pattern.
• Creational Design Pattern: Singleton Pattern, Prototype Pattern, Factory Pattern, Abstract Factory Pattern, Builder Pattern.
• Behavioural Design Pattern: Interpreter Pattern, Iterator Pattern, Chain Of Responsibility Pattern, Observer Pattern, State Pattern, Command Pattern, Mediator Pattern, Memento Pattern, Strategy Pattern, Visitor Pattern, Template Pattern